Computing-scale



(No Model.)

D. J. SMITH, Jr. COMPUTING SCALE.

No. 534,483. Patenged Feb. 19, 1895.

. ATTORNEY.

UNITED STATES PATENT OFFICE.

DRURY J. SMITH, JR, OF DAYTON, OHIO.

COMPUTING-SCALE.

SPECIFICATION forming part of Letters Patent No. 534,483, dated February19, 1 895 Application filed June 22, 1894. Serial No. 515,443, (Nomodel.)

T0 at whom it may concern.-

Be it known that I, DRURY J. SMITH, Jr, of Dayton, county of Montgomery,State of Ohio, have invented a new and useful Improvement inComputing-Scales; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked Ehereon, which form a part of this specificaion.

My invention relates to new and useful improvements in computing orprice scales, with special reference to counter scales of thenonchangeable leverage type.

The object of the invention is to provide means for simultaneouslyshowing, by a single operation, the prices per pound of the variousgoods, the total weight and the total value of the package or thespecific quantity of said goods, that may at any time be sold.

A further object is to provide means for showing these 011 both sides ofthe scale, in order that the vendee and vendor may have equal facilityfor seeing the same.

To these ends my invention consists of parts and arrangements thereofthat will be described in the following specification, and set forth inthe claims.

In the annexed drawings which form a part of the specification: Figure 1is a side elevation, showing my improved attachment; Fig. 2, a sectionon the line 00cc of Fig. 1; Fig. 3, a detail end elevation of the poisewith a portion of the weight beam in section, and a supplemental weightattached to the poise.

A indicates a scale; B, the weight beam thereof, having a fulcrum at a.

Z) and 1) indicate uprights, secured to the weight, and tare beams B andB.

O is a casing, preferably constructed of sheet metal, with its endsinclosed, and at which points said casing is attached to the uprights band b so that it occupies a position above the beam B. In cross section,the shape of this casing is substantially as shown in Fig. 2, in whichit will be noted, the central longitudinal sides turn or deflectinwardly, making this portion of said casing more narrow than theremaining parts, which is a desirable construction. cand c designateslots provided in the central longitudinal sides of said casing. rollersinclosed in the upper and lower longitudinal parts of said casing, andthe journals of which are provided with bearings in the uprights b andb. e designates a flexible sheet inclosing said rollers and made fastthereto at both ends. This sheet may be of any suitable material havingthe requisite strength and pliability to stand the usage, and admit of aready winding about the rollers. At present, however, I prefer toconstruct it of thin tenacious celluloid. This sheet is adapted to bewound back and forth on the rollers (Z and d in a manner presentlydescribed, and the function thereof, is to indicate the various numeralscontained thereon (which are duplicated on both sides of the sheet)through the longitudinal slots cand c in the casing.

fand f designate small rollers having their ends journaled in the endsof the metallic casing O, the purpose of which is to maintain the indexsheet 8 between the rollers cl and cl in a central position, to admit ofthe figures thereon being visible with equal plainness through bothslots. See Fig. 2. The figures inscribed on this sheet, in the presentinstance, indicate the values of specific quantities of goods.

g and g designate gear wheels, keyed to the respective shafts of rollerscl and d which project beyond the upright b, for this purpose.

g is an intermediate gear wheel keyed to a short shaft which is alsojournaled in the upright b and upon which shaft a pulley It is alsofixed. This intermediate gear wheel meshes with wheels 9 and g.

t designates an endless cord or cable which is preferably wound a coupleof times around pulley 7L, carried upward over a guide pulley h andhorizontally over a similar pulley 7L, both of the latter pulleys beingmounted on the extreme ends of the casing G in a central position. Inorder to prevent the cord from slipping on pulley h and to secure apositive movement of said pulley to insure the proper figures on thesheet 6 appearing at the slots (Z and (Z designate parallel p c and c, Ifasten one strand of said cord to the pulley at a given point by meansof a pin or staple.

j designates a supplemental scale mounted horizontally above the casingO, and occupying a central position with reference to said casing, asshown in Fig. 2. The ends of this scale are made secure to the uprightsb and b and the figures thereon indicate the prices per pound of thevarious commodities. 7c designates a poise straddling said scale andadapted to be moved thereon. To this poise one strand of the endlesscord 2' is fastened. By winding the cord '5 around the pulley h a givennumber of times, the pulley is subjected to as many revolutions ineither direction.

From the foregoing description, it will be seen that the sliding of thepoise 7c, will likewise move the cord 1', and the pulley 7t, throughwhich the train of gearing will be set in motion, and the rollers d andd will simultaneously wind and rewind the sheet e to indicate thedesired figure or figures at the slots 0 and c.

It will be understood that the figures on the sheet 6 are arranged withreference to those on the scalej; that is to say, assuming that threepounds of an article are sold, at fifty cents per pound, the compoundweight and value poise s is moved along the weight beam B to figure 3.The poise 7c is then moved to 5O on the scale j. This movement of thepoise 7c will rotate the flexible sheet 6, in the manner hereinbeforedescribed, to make 150 appear at the upper pointer on the poise s. As isnow shown in Fig. 1, two and three-fourths pounds of an article sellingat fifty cents per pound have been retailed. If there were sufficientspace, 137 and a fraction would appear to the right of 125.

It will be seen from Fig. 2, that the poise 5 extends up on both sidesof the casing C to the vicinity of the longitudinal slots 0 and o whereit points to the figures on the winding sheet. In connection with thepoise s, m indicates a supplemental weight, of which there may be anumber, having greater or less specific gravity, which may be attachedto either side of the poise sin any suitable way. In the presentinstance, said weight is provided with one or more pins that enter holesin the upper edge of the poise as is shown in dotted lines, at 9 Fig. 3.The object of thus multiplying the weight of poise sis to increase thecapacity of the scale, which is done by multiplying the figures on theweight beam, and flexible sheet in the same ratio that the weight isincreased, or extra sets of figures may be provided on the weight beamand flexible sheet, to indicate the weight and value when saidadditional weight is attached to the poise 8.

Having described my invention, I desire to claim and secure by LettersPatent 1. The combination with the weight beam, of a flexible windingsheet provided with corresponding figures on both sides, the figures onone side being in alignment with those on the other, devices interposedbetween the sheet, and the price per pound poise for moving said sheet,substantially as herein described.

2. The combination with a scale beam, and sliding poise, of a flexiblesheet having corresponding figures on both sides indicating thetotalvalues of specific quantities of goods, rollers upon which saidsheet is wound, a casing inclosing said sheet, having longitudinal slotsthrough which the figures on said sheet are visible on both sides of thescale, a graduated scale adjacent to said casing indicating the cost ofgoods in pound quantities, a sliding poise on said scale, and meansinterposed between said sliding poise, and the flexible sheet forwinding the latter, substantially as herein described.

In testimony whereof I have hereunto set my hand this 13th day of June,1894:.

DRURY J. SMITH, J 1i.

Vitnesses:

R. J. MoCAR'rY, LESTER L. ALLEN.

